【摘要】 极值点和拐点是高阶导数应用中两个常见的概念。文章通过对同济版《高等数学》一道课后习题的讨论 ,给出导数阶数、极值点和拐点的关系 ,并将该问题进行推广 ,使其具有定理的职能。更多还原

【Abstract】 The point of minima value and the point of inflexion are two common concepts of derivative. The paper states the relationship between the number of order of derivative, the point of minima value and the point of inflexion by discussing the practice in Advanced Mathematics of Tongji Edition. In addition, the problem is spread so as to make itself serve as a theorem.更多还原